| TITri-state Industries INC | Dubuque | 20–99 | ◇ UNVERIFIED |
| JDJohn Deere Foundry - Waterloo Facility | Waterloo | — | ◐ LIKELY ACTIVE |
| PCPremier Casting Services, INC. | Waterloo | 20–99 | ◐ LIKELY ACTIVE |
| TLTdvib LLC | Boone | 1–19 | ◐ LIKELY ACTIVE |
| DDDyersville Die Cast | Dyersville | — | ◐ LIKELY ACTIVE |
| KFKloppenborg Foundry & Fan CO | Davenport | 1–19 | ◐ LIKELY ACTIVE |
| RMRich Metals CO | Davenport | — | ◐ LIKELY ACTIVE |
| SFSeabee Foundry | Hampton | — | ◐ LIKELY ACTIVE |
| APAce Precision Castings LLC | Marshalltown | — | ◇ UNVERIFIED |
| AMAlter Metal Recycling - Council Bluffs Facility | Council Bluffs | — | ◇ UNVERIFIED |
| AMAlter Metal Recycling - Davenport | Davenport | — | ◇ UNVERIFIED |
| AMAlter Metal Recycling - Mason City Facility | Mason City | — | ◇ UNVERIFIED |
| AAArrow Acme CORP. | Webster City | — | ◇ UNVERIFIED |
| BFBlackhawk Foundry & Machine CO | Davenport | — | ◇ UNVERIFIED |
| BFBloomfield Foundry, INC | Bloomfield | — | ◇ UNVERIFIED |
| CPCedar Poly LLC | Bennett | — | ◇ UNVERIFIED |
| CVCrane Valves Fndry Sand Landfill-wa Cnty | Washington | — | ◇ UNVERIFIED |
| EIEagle Iron Works | Des Moines | — | ◇ UNVERIFIED |
| HHHampton Hydraulics Llc-div of Seabee | Hampton | — | ◇ UNVERIFIED |
| ITIpsco Tubulars Incorporated | Camanche | — | ◇ UNVERIFIED |
| MCMax Cast | Kalona | — | ◇ UNVERIFIED |
| MMepco | Marshalltown | — | ◇ UNVERIFIED |
| QAQuandt Auto Salvage | Carroll | — | ◇ UNVERIFIED |
| RRyerson | Marshalltown | — | ◇ UNVERIFIED |
| SSSivyer Steel CORP | Bettendorf | — | ◇ UNVERIFIED |
| TCTwin City Holland LLC - Administrative Id # Only | Davenport | — | ◇ UNVERIFIED |
| VPViking Pump Inc-alloys Foundry | Cedar Falls | — | ◇ UNVERIFIED |
| ALAnyGlide, LLC | Rock Valley | 1–19 | ◐ LIKELY ACTIVE |
| CVClow Valve Company - Metal Casting Facility | Oskaloosa | 100–499 | ◐ LIKELY ACTIVE |
| KIKcng Iowa | Cedar Falls | 20–99 | ◐ LIKELY ACTIVE |
| PGPhoenix Global, LLC-Wilton | Wilton | 1–19 | ◐ LIKELY ACTIVE |
| SRSSAB R & D of SSAB Iowa Inc. | Muscatine | 1–19 | ◐ LIKELY ACTIVE |
| VPViking Pump Inc - Foundry (A Unit of IDEX Corporation) | Cedar Falls | 20–99 | ◐ LIKELY ACTIVE |
| GLGFrench, LLC | Arnolds Park | 1–19 | ◇ UNVERIFIED |
| SISoutheast Iowa Aluminum Foundry, INC. | Keokuk | 1–19 | ◇ UNVERIFIED |
| TIThe Iron Works LTD. | Des Moines | 1–19 | ◇ UNVERIFIED |
| TMThorne Metal Works | Parkersburg | 1–19 | ◇ UNVERIFIED |
